I would say the correct answer is that has an undetermined answer.
If a subject has been thoroughly covered, then there is no need for this researcher to do it all over again. If it's impossible to answer, there is no need to try. If it can be answered easily, then it doesn't really require a research. This leaves us with the last option, because a researcher might want to try and determine the answer.
Answer:
2.a Namubiru is a very beautiful girl
b. Lindy is the shortest girl in our class.
Answer:
Open-Ended Questions. ...
Give Responsible Tasks. ...
Work in Groups. ...
Positive Competition. ...
Evaluation Programs.
Switch Roles. ...
Motivational Quotes. ...
Field Trips.
Answer: B
Explanation: Just did it on edge